805655 has 8 divisors (see below), whose sum is σ = 972000. Its totient is φ = 641056.

The previous prime is 805639. The next prime is 805687. The reversal of 805655 is 556508.

805655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 805655 - 2⁴ = 805639 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805655.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

805655 is a Friedman number, since it can be written as 5*(80+(6+5)^5), using all its digits and the basic arithmetic operations.

2⁸⁰⁵⁶⁵⁵ is an apocalyptic number.

805655 is a deficient number, since it is larger than the sum of its proper divisors (166345).

805655 is a wasteful number, since it uses less digits than its factorization.

805655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 805655 is about 897.5828652553. The cubic root of 805655 is about 93.0499981665.

The spelling of 805655 in words is "eight hundred five thousand, six hundred fifty-five".